The Main Power Supply Appendix A: Power Supply Calculations
AFP-100/AFP-100E Instruction PN 51010:C1 02/06/2002
75
Calculating the Battery Capacity
Use this table to determine the battery capacity needed for the system:
Table 16 Battery Calculations
The following notes apply to Table 16:
• Up to 12 AH batteries can be located in the AFP-100 backbox.
• 12 AH to 18 AH batteries require the Notifier BB-17 battery box.
• The AFP-100 main circuit board allows disabling of AFP-100 battery charger if using the CHG-
120 Battery Charger for 25 AH to 100 AH batteries (requires separate housing).
Standby Load
Current (amps)
[ ]
X Required Standby Time in
Hours (24 or 60)
[ ] = ___________
Alarm Load
Current (amps)
[ ]
X Required Alarm Time in
Hours (5 min. = 0.084)
[ ] = ___________
Add Standby and Alarm Load for Required
Ampere Hour Battery = ___________
Multiply above total by the Derating Factor X 1.2
Total Ampere Hours (AH) Required = ___________
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